Structural–chemical features and mechanism of crystallization of TlAsX2 glasses (X = S, Se)
- 作者: Shkol’nikov E.V.1
-
隶属关系:
- Department of Chemistry
- 期: 卷 42, 编号 4 (2016)
- 页面: 363-371
- 栏目: Article
- URL: https://journals.rcsi.science/1087-6596/article/view/215625
- DOI: https://doi.org/10.1134/S108765961604012X
- ID: 215625
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详细
The vibrational IR spectra of polymer-chain glasses and single crystals of TlAsX2 (X = S, Se) have been studied. The results of the kinetic study of the surface isothermal crystallization of glasses are theoretically anlayzed in different ways, taking into account the peculiarities of their structure. The semiempirical calculation of the temperature dependence of nonreconstructive crystal growth rate is performed. It is shown that the layered stationary growth of crystals in the TlAsS2 glass occurs on screw dislocations. In the TlAsSe2 glass the transition from a dislocation mechanism to two-dimensional nucleation and the layered growth of crystals is possible at supercooling of more than 120°C.
作者简介
E. Shkol’nikov
Department of Chemistry
编辑信件的主要联系方式.
Email: eshkolnikov@yandex.ru
俄罗斯联邦, Institutskii per. 5, St. Petersburg, 194021
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